A valve includes a valve body, a valve rod, a valve seat, and a valve core assembly. The valve core assembly is mounted inside the valve body and includes a valve core. The valve core is articulated to the valve body, and the valve core assembly further includes a drive member, a positioning member, and a flexible member. The positioning member is mounted on the valve core such that it may move relative to same. The flexible member is mounted between the positioning member and the valve core; thus the drive member has a separable fitting relationship with the positioning member.
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1. A valve comprising a valve body, a valve rod, a valve seat and a valve core assembly, the valve core assembly being mounted in the valve body and including a valve core, the valve core being hinged to the valve body, wherein the valve core assembly further includes a drive member, a positioning member and a flexible member, wherein the positioning member is movably mounted on the valve core, and the flexible member is mounted between the positioning member and the valve core, and the drive member has a separable cooperating relationship with the positioning member, such that, corresponding to movement of the drive member, the valve has the following three drive relationships while it is being closed:
the drive member cooperates with the positioning member to form a relatively static first transmission relationship under elastic action of the flexible member and drives the valve core to rotate to close the valve core until the valve core reaches a first closed position; when the first transmission relationship ends, the drive member and the positioning member are switched from the first transmission relationship to a second transmission relationship, and the drive member presses the positioning member to make the positioning member perform relative movement with respect to the valve core until the positioning member is engaged with the valve body in an extended state; when the second transmission relationship ends, the drive member and the positioning member are switched from the second transmission relationship to a third transmission relationship between the drive member and the valve core, and the drive member controls the positioning member in the extended state, so that the positioning member is always engaged with the valve body, and the drive member presses the valve core to perform a pressing movement toward a valve through-hole radial direction, thereby sealingly locking the valve core in a second closed position.
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The present invention relates to a container, in particular to a valve.
For existing valves for medium-sized bulk storage containers, its flow is affected by the valve core and the shaft, and the sealing is poor, because their valve core is generally located inside the valve body, such as butterfly valves are opened by choosing rotating axle in the middle of the valve core, which drives the valve core to rotate on both sides to open and. Because of the friction between the butterfly valve seal and the valve body, the force for opening and closing the valve is relatively large.
Recently, a guide groove type lifter ball valve has been developed at home and abroad. The valve stem has an S-shaped guide groove, which cooperates with the guide pin to drive the ball out of the valve seat when the valve stem is raised, and then rotates 90° counterclockwise to completely open the valve. When the valve stem is lowered, the ball is driven to be rotated 90° clockwise and then pressed against the valve seat to close the valve. The disadvantage of this technology is that the valve stem has a long S-shaped guide groove. When rotating for opening and closing, the valve stem is required to be guided to spiral rise or fall in the guide groove, so that the guide groove takes up a large space and has a large rotation angle.
A patent discloses a disc-shaped double-track rotary and hoisted valve opening and closing structure, which is composed of a fixed disc, a rotating disc and a limit pin. When the external force drives the valve rod together with the rotating disc to drive the limit pin, the limit pin rotates clockwise along the trajectory of the “arc” track on the fixed disk. When rotating to the “straight” track connected by the “arc” track, the rotating disk continues to rotate clockwise. Under the positive force of the “supporting” track on the rotating disc, the limit pin is extended to the periphery of the fixed plate support along the “straight” track on the fixed disc. At this time, the limit pin and the valve sealing structure are closed to the valve seat, and the valve is closed. When the valve stem rotates counterclockwise along with the rotating disc, the limit pin and the sealing structure of the valve firstly follow the trajectory of the “straight” track on the fixed disc to gather toward the center of the fixed disc under the positive force of “supporting” track on the rotating disc. Then, according to the trajectory of the “arc” track on the fixed plate, the the limit pin and the sealing structure of the valve rotates counterclockwise, and the valve is opened. The technical disadvantage of the patent is that “the arc track connected to straight track” is required, which requires high precision, complicated processing technology, and the valve core is a combination, which is difficult to obtain a balanced pre-tightening force, which causes damage to the valve core and shortens the life of the valve.
A patent describes a rail-type plug valve, including a valve body, a valve cover, an operating member, a valve rod, a valve seat, a valve plug that forms a conical sealing joint with the valve seat, and a rail-type mechanism, wherein the rail-type mechanism consists of a track ring which is mounted on neck portion of the valve plug and has two guide groove and a double pin plate having two guide pins pinned into the guide groove, and also includes a lock nut and an adjustment ring for adjusting the installation position of the track ring. The disadvantage of this patent is that transmission structure is complicated, which occupies the outer space of the valve body; the transmission device involves many components and the assembly process is complicated; in addition, due to the valve plug of the conical sealing joint and the lock nut and the adjusting ring for adjusting the installation position of the rail ring, it requires multiple adjustments, thus the operation is complicated.
The present invention aims to provide a valve to solve the above problems in the prior art.
To solve the above technical problem, according to one aspect of the present invention, a valve is provided. The valve comprises a valve body, a valve rod, a valve seat and a valve core assembly, the valve core assembly being mounted in the valve body and including a valve core, the valve core being hinged to the valve body, the valve core assembly further includes a drive member, a positioning member and a flexible member, wherein the positioning member is movably mounted on the valve core, and the flexible member is mounted between the positioning member and the valve core, and the drive member has a separable cooperating relationship with the positioning member, such that the valve has following three drive relationships while it is being closed:
the drive member cooperates with the positioning member to form a relatively static first transmission relationship under elastic action of the flexible member and drives the valve core to rotate to close the valve core; when the first transmission relationship ends, the drive member and the positioning member are switched from the first transmission relationship to a second transmission relationship, and the drive member presses the positioning member to make the positioning member perform relative movement with respect to the valve core; when the second transmission relationship ends, the drive member and the positioning member are switched from the second transmission relationship to a third transmission relationship between the drive member and the valve core, and the drive member controls the positioning member in an extended state, so that the positioning member is always in a state of being engaged with the valve body, and the drive member presses the valve core to perform a pressing movement toward the valve through-hole radial direction, thereby sealingly locking the valve core.
In one embodiment, the drive member is provided with a control cam, and an end of the positioning member is provided with a control cam engaging surface, wherein the control cam cooperates with the control cam engaging surface thereby realizing rotation of the drive member to drive the positioning member to slide.
In one embodiment, the valve core is provided with a connecting portion, and the connecting portion is provided with a first recess, and the drive member is installed in the first recess, and a hanging table is disposed on the drive member, and a hanging table mating surface is disposed in the first recess, and opening of the valve is realized by cooperation of the hanging table and the hanging table mating surface.
In one embodiment, a locking cam is further disposed on the drive member, and a locking boss is disposed at a bottom of the first recess of the valve core, wherein the locking cam cooperates with the locking boss to achieve the third transmission relationship.
In one embodiment, the valve core is provided with a positioning member guide rail, and the flexible member abuts against the positioning member and is mounted on the positioning member guide rail together with the positioning member.
In one embodiment, the positioning member rail is a mounting hole disposed in the valve core, and the positioning member is a positioning rod, and the flexible member is a spring, wherein one end of the spring abuts the mounting hole and the other end of the spring abuts a bottom of the positioning rod.
In one embodiment, the valve further comprises a valve rod, the drive member is provided with a first valve rod fitting hole, and both sides of the first recess of the connecting portion is disposed with a second valve rod fitting hole, and the valve rod extends into the first valve rod fitting hole and the second valve rod fitting hole, so that the rotation of the valve rod drives the drive member to rotate.
In one embodiment, the valve body is provided with a positioning member locking portion, and in the third transmission relationship, when the drive member controls the positioning member in an extended state, the positioning member locking portion limits position of the positioning member.
In one embodiment, the positioning member locking portion limits position of the positioning member in a vertical direction.
In one embodiment, the valve body is provided with a valve core mounting portion, and the valve core mounting portion is provided with a second recess, and both sides of the second recess are provided with a valve rod positioning hole, wherein the connecting portion of the valve core is installed in the second recess, and the valve rod passes through the valve rod positioning hole, the first valve rod fitting hole, the second valve rod fitting hole and the connecting portion, so as to rotatably mount the valve core in the valve body.
In one embodiment, the valve further comprises a handle provided with a driving gear, and the valve rod is provided with a driven gear for cooperating with the driving gear such that rotation of the handle drives the valve rod to rotate.
In one embodiment, the valve further comprises a flange and a cover, and the valve seat comprises an outer valve seat and an inner valve seat, wherein the outer valve seat is disposed between the valve body and the cover, and the inner valve seat is disposed between the valve core and the valve body, and the cover is disposed at an outlet end of the valve body, and the flange is disposed at an inlet end of the valve body.
According to another aspect of the present invention, a valve is further provided. The valve comprises a valve body, a valve rod, a valve seat and a valve core assembly, the valve core assembly being mounted in the valve body and including a valve core, the valve core being hinged to the valve body, wherein the valve core assembly further includes a drive member and a positioning member movably mounted on the valve core, and the drive member has a separable cooperating relationship with the positioning member, such that the valve has following two drive relationships while it is being closed:
the drive member cooperates with the positioning member to form a relatively static first transmission relationship under elastic action and drives the valve core to rotate to close the valve core; when the first transmission relationship ends, the drive member and the positioning member is switched from the first transmission relationship to a second transmission relationship, and the drive member presses the positioning member to cause the positioning member to perform relative movement with respect to the valve core and the positioning member in the state for cooperating with the valve body, thereby sealingly locking the valve body.
In one embodiment, the positioning member is provided with an elastic rib, and the elastic rib is integrally disposed on the positioning member.
In one embodiment, an flexible member is further included, and the flexible member is integrally formed with the positioning member, and the flexible member is an elastic rib disposed on an outer circumference of the positioning member.
In one embodiment, a flexible member is further included, and the flexible member is a compression spring, and the positioning member is a positioning rod, and the compression spring is sleeved on the positioning rod.
In one embodiment, the drive member is provided with a control cam, and an end of the positioning member is provided with a control cam engaging surface, wherein the control cam cooperates with the control cam engaging surface thereby realizing rotation of the drive member to drive the positioning member to slide.
In one embodiment, the valve core is provided with a connecting portion, and the connecting portion is provided with a first recess, and the drive member is installed in the first recess, and a hanging table is disposed on the drive member, and a hanging table mating surface is disposed in the first recess, and opening of the valve is realized by cooperation of the hanging table and the hanging table mating surface.
In one embodiment, a locking cam is further disposed on the drive member, and a locking boss is disposed at a bottom of the first recess of the valve core, wherein the locking cam cooperates with the locking boss to achieve the third transmission relationship.
In one embodiment, the valve core is provided with a positioning member guide rail, and the flexible member abuts against the positioning member and is mounted on the positioning member guide rail together with the positioning member.
The valve of the present invention has advantages of fewer component parts, a simple manufacturing process, a simple structure, and good utilization of space, which allows the valve to be minimized, while the valve opening torque is small and the sealing effect is excellent.
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments shown in the drawings are not intended to limit the scope of the invention, but only to illustrate the spirit of the invention.
According to one aspect of the present invention, a valve generally comprises a valve body, a valve rod, a valve seat and a valve core assembly, the valve core assembly being mounted in the valve body and including a valve core, the valve core being hinged to the valve body, the valve core assembly further includes a drive member, a positioning member and an flexible member, wherein the positioning member is movably mounted on the valve core, and the flexible member is mounted between the positioning member and the valve core, and the drive member has a separable cooperating relationship with the positioning member, such that the valve has following three drive relationships while it is being closed:
the drive member cooperates with the positioning member to form a relatively static first transmission relationship under elastic action of the flexible member and drives the valve core to rotate to close the valve core; when the first transmission relationship ends, the drive member and the positioning member are switched from the first transmission relationship to a second transmission relationship, and the drive member presses the positioning member to make the positioning member perform relative movement with respect to the valve core; when the second transmission relationship ends, the drive member and the positioning member are switched from the second transmission relationship to a third transmission relationship between the drive member and the valve core, and the drive member controls the positioning member in an extended state, so that the positioning member is always in a state of being engaged with the valve body, and the drive member presses the valve core to perform a pressing movement toward the valve thrugh-hole radial direction, thereby sealingly locking the valve core.
According to another aspect of the present invention, a valve is further provided. The valve comprises a valve body, a valve rod, a valve seat and a valve core assembly, the valve core assembly being mounted in the valve body and including a valve core, the valve core being hinged to the valve body, wherein the valve core assembly further includes a drive member and a positioning member movably mounted on the valve core, and the drive member has a separable cooperating relationship with the positioning member, such that the valve has following two drive relationships while it is being closed:
the drive member cooperates with the positioning member to form a relatively static first transmission relationship under elastic action and drives the valve core to rotate to close the valve core; when the first transmission relationship ends, the drive member and the positioning member is switched from the first transmission relationship to a second transmission relationship, and the drive member presses the positioning member to cause the positioning member to perform relative movement with respect to the valve core and the positioning member in the state for cooperating with the valve body, thereby sealingly locking the valve core.
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in
As shown in
As shown in
Although the guide rail 210 is a radial through hole provided in the valve core 21 in the present embodiment, those skilled in the art will appreciate that the guide rail 210 may be provided in other manners.
As shown in
As shown in
As shown in
As shown in
As shown in
The transmission relationship of the valve opening process is opposite to the transmission relationship of the valve closing process, which will be readily understood by those skilled in the art and will not be described in detail herein. It should be noted that during the opening process of the valve, the drive member 22 realizes the force transmission through the cooperation of the hanging table 221 of the drive member 22 and the hanging table mating surface 213 of the valve core 21, that is, the hanging table 221 exerts a force to the hanging table mating surface 213 so as to achieve opening of the valve core 21.
In the present invention, as a preferred manner, the positioning member is a positioning rod, and the flexible member is a compression spring. However, those skilled in the art can understand that the positioning member can also adopt other forms, and the flexible member can also adopt other flexible member such as a rubber stopper or the like, and the positioning member and the flexible member may be integrally formed, reference to the following embodiments.
Although in the embodiments described above, the positioning member and the flexible member are separate members. However, in another embodiment, the positioning member and the flexible member may be a single piece. At this time, the flexible member is disposed on the positioning member, for example, by providing elastic ribs on the outer circumference of the positioning member, and at this time, the elastic rib is used as the flexible member. When the positioning member is installed in the guide rail of the valve core, the elastic rib is engaged with one end of the guide rail, so that the end of the guide rail applies a force to the elastic rib to unlock the positioning member.
In another embodiment, a groove may be provided on the positioning member. A flexible member is disposed in the groove, and a stopper portion (such as a stopper pin or a stopper post or the like extending downward from the upper side wall of the guide rail) is disposed in the guide rail. The stopping portion extends into the groove and compresses the flexible member, so that when the positioning member moves relative to the driving member, the flexible member applies an elastic force to the positioning member under the action of the stopping portion, thereby realizing the positioning member to be unlocked.
The valve of the present invention has advantages of fewer component parts, a simple manufacturing process, a simple structure, and good utilization of space, which allows the valve to be minimized, while the valve opening torque is small and the sealing effect is excellent.
The preferred embodiments of the present invention have been described in detail hereinabove, and it is understood that various modifications and changes may be made by those skilled in the art. These equivalent forms also fall within the scope defined by the claims appended hereto.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Jan 20 2017 | SHANGHAI HONGYAN RETURNABLE TRANSIT PACKAGINGS CO., LTD | (assignment on the face of the patent) | / | |||
| Aug 15 2018 | FANG, ZHENGWEI | SHANGHAI HONGYAN RETURNABLE TRANSIT PACKAGINGS CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 047102 | /0883 |
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